currently building: teh solo bookkeeping v1.4

i'm muhar.
creating systems and random chaos.

building practical things on the internet and quiet interfaces for real workflows. currently building internal enterprise systems and side experiments in banten, indonesia.

selected works connect
01 / core conviction

systems that run quietly.

i believe software should work silently without needing constant firefighting. i specialize in turning messy manual spreadsheets into clean, structured relational databases.

02 / stack design

pragmatic engineering.

i choose technologies based on the problem, not the hype. Next.js, Laravel, Node.js, and SQLite / PostgreSQL. if it is robust and fast to load, it stays.

system environment
  • OSmacOS / Linux
  • EditorVSCode / Vim
  • DatabaseSQLite, Mysql, Mongo
  • Mobile FrameworkFlutter (Dart)
last push: 2026-05-29
03 / production code

selected systems

view all works
Teh Solo Management SystemERP & Sales

accounting & cash flow engine for a local tea company.

completely centralized paper-based bookkeeping into a reliable Next.js system. handles daily cash sheets, itemized raw material overheads, and monthly profit margins.

db_ledger_audit.sqlsuccess
SELECT date, sum(amount) FROM cash_inflows GROUP BY date;
> 12,450 rows processed successfully
> 100% bookkeeping audit match
live system
Pharmacy Management SystemDatabase

stock auditing & prescription fulfillment manager.

campus database system focused on indexing medical formulas, prescription stocks, and transaction flows. optimized queries to prevent overlapping sales during low stock triggers.

schema_relations.dbml
Table medicine { id primary, formula text, stock int }
Table sales { id primary, medicine_id ref, quantity int }
> constraint: stock >= quantity
codebase
04 / desk setup

technology stack

frontend
  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
backend
  • Laravel
  • PHP
  • Node.js
  • RESTful APIs
database
  • PostgreSQL
  • SQLite
  • MySQL
  • MongoDB
tactile & build
  • Flutter
  • Git / GitHub
  • Neovim setup
  • ERP UX design
05 / visual playground

playground & sketches

imperfect logs
Sketch 01 / System Design

ERP Architecture Draft

drafting accounting flows that balance raw materials vs itemized sales records in a highly concurrent database.

SQLite schema flow2026-05-20
Sketch 02 / Creative Code

Asymmetric CSS Blueprint

experimenting with raw non-traditional layouts without frameworks to maximize visual weight and readability.

CSS layout grid2026-05-15
Sketch 03 / Human Detail

tactile keyboard sound design

recording customized keystroke audio models to enrich user feedback loops inside silent data inputs.

Audio experiments2026-05-02
06 / contact

let's build something.

need an internal tool built? want to discuss clean user flows, system database architecture, or mechanical keyboards? drop me a line. i generally reply within a day.

ferdiansyahmuh5@gmail.com